MOCR > Volume 5, Number 1, August 2020

The Effect of SiO₂/Al₂O₃ Ratio on Hydroisomerization Reaction Performance of Pd/SAPO-31 Catalysts
DOI: 10.22606/mocr.2020.51001

Author(s)
Yungang Jia, Tiezhen Zhang, Famin Sun, Wei Wu
Affiliation(s)
Daqing Petrochemical Research Center, Petrochemical Research institute, CNPC, Daqing 163714, China
Daqing Petrochemical Research Center, Petrochemical Research institute, CNPC, Daqing 163714, China
Daqing Petrochemical Research Center, Petrochemical Research institute, CNPC, Daqing 163714, China
Heilongjiang University, Harbin 150080, China
Abstract
SAPO-31 molecular sieves with various (SiO₂)/(Al₂O₃) ratio were synthesized using di-n-butylamine (DBA) as the template. The samples were well characterized by XRD, N2 sorption-desorption, SEM, NH3-TPD and Py-IR. The results showed that the sample had good crystallinity (SiO2/Al2O3 ratio of 0.6). Isomerization of deoxidized vegetable oil is carried in a fixed-bed reactor with 100ml catalyst at 2.0MPa, 350°C, WHSV 1.5, hydrogen-oil ratio 500:1. The highest biodiesel yield of 92.2wt% was obtained over the Pd/SAPO-31(0.6) catalyst with solidifying point 0°C, flash point 60°C and cetane number 74. Catalyst had no loss of activity and shows high stability and excellent hydroisomerization performance.
Keywords
SAPO-31, biodiesel, hydroisomerization dewaxing, SiO₂/Al₂O₃ ratio, Pd
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